Panasonic Optional 27" Trim Kit for 1.2 cuft Microwaves, Stainless Steel, NN-TK621SS One piece 27-inch stainless steel trim kit Fits most 1.2cubic feet microwaves Unit measures 27-inch w x 16-1/2-inch h Cabinet cut-out dimensions: 25 1/2-inch w x 15 5/16-inch h x 21-inch d Installation required